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/* $Cambridge: hermes/src/prayer/lib/template_compile.c,v 1.4 2010/07/07 08:52:14 dpc22 Exp $ */
/************************************************
* Prayer - a Webmail Interface *
************************************************/
/* Copyright (c) University of Cambridge 2000 - 2008 */
/* See the file NOTICE for conditions of use and distribution. */
#include "lib.h"
/* Compiled template cotains following sections
*
* 1) Forward declarations to stop compiler warnings:
*
* static struct template_ifdef _t17;
*
* 2) Actual declarations, written as top down structure
*
* static struct template_ifdef _t17 = { ... };
*
* 3) External interface:
*
* struct template _template_abook_list = { ... };
*
* which gives us a name which can be linked into the master array.
*/
static void
template_compile_string(char *s, FILE *file, BOOL atend)
{
char c;
if (!s) {
fprintf(file, " NIL%s\n", (atend) ? "" : ",");
return;
}
fprintf(file, " \"");
while ((c=*s++)) {
if ((c == '"') || (c == '\\'))
fputc('\\', file);
fputc(c, file);
}
fprintf(file, "\"%s\n", (atend) ? "" : ",");
}
static void
template_compile_block(struct template_item *item, FILE *file, BOOL atend)
{
if (item)
fprintf(file, " (struct template_item *)((void *)&_t%lu)",
item->number);
else
fprintf(file, " NIL");
if (!atend)
fputc(',', file);
fputc('\n', file);
}
static void
template_compile_common(struct template_item *item, FILE *file)
{
fprintf(file, " %lu,\n", item->number);
template_compile_block(item->list_next, file, NIL);
template_compile_block(item->tree_next, file, NIL);
}
static void
template_compile_lines(struct template_lines *item, FILE *file)
{
char **p = item->first;
int count = item->count;
fprintf(file, "static char *_t%lu_lines[] = {\n", item->number);
while (*p && (count > 0)) {
template_compile_string(*p, file, NIL);
p++;
count--;
}
fprintf(file, " NIL\n");
fprintf(file, "};\n\n");
fprintf(file, "static struct template_lines _t%lu = {\n", item->number);
template_compile_common((struct template_item *)item, file);
fprintf(file, " TEMPLATE_ITEM_LINES,\n");
fprintf(file, " _t%lu_lines,\n", item->number);
fprintf(file, " %d\n", item->count);
fprintf(file, "};\n\n");
}
static void
template_compile_ifdef(struct template_ifdef *item, FILE *file)
{
fprintf(file, "static struct template_ifdef _t%lu = {\n", item->number);
template_compile_common((struct template_item *)item, file);
fprintf(file, " TEMPLATE_ITEM_IFDEF,\n");
fprintf(file, " %s,\n", (item->positive) ? "T" : "NIL");
template_compile_string(item->expr, file, NIL);
template_compile_block(item->true_block, file, NIL);
template_compile_block(item->false_block, file, T);
fprintf(file, "};\n\n");
}
static void
template_compile_ifeq(struct template_ifeq *item, FILE *file)
{
fprintf(file, "static struct template_ifeq _t%lu = {\n", item->number);
template_compile_common((struct template_item *)item, file);
fprintf(file, " TEMPLATE_ITEM_IFEQ,\n");
fprintf(file, " %s,\n", (item->positive) ? "T" : "NIL");
template_compile_string(item->name, file, NIL);
template_compile_string(item->value, file, NIL);
template_compile_block(item->true_block, file, NIL);
template_compile_block(item->false_block, file, T);
fprintf(file, "};\n\n");
}
static void
template_compile_foreach(struct template_foreach *item, FILE *file)
{
fprintf(file, "static struct template_foreach _t%lu = {\n", item->number);
template_compile_common((struct template_item *)item, file);
fprintf(file, " TEMPLATE_ITEM_FOREACH,\n");
template_compile_string(item->name, file, NIL);
template_compile_string(item->array, file, NIL);
template_compile_block(item->block, file, T);
fprintf(file, "};\n\n");
}
static void
template_compile_loop(struct template_loop *item, FILE *file)
{
fprintf(file, "static struct template_loop _t%lu = {\n", item->number);
template_compile_common((struct template_item *)item, file);
fprintf(file, " TEMPLATE_ITEM_LOOP,\n");
template_compile_string(item->var, file, NIL);
template_compile_block(item->block, file, T);
fprintf(file, "};\n\n");
}
static void
template_compile_call(struct template_call *item, FILE *file)
{
fprintf(file, "static struct template_call _t%lu = {\n", item->number);
template_compile_common((struct template_item *)item, file);
fprintf(file, " TEMPLATE_ITEM_CALL,\n");
template_compile_string(item->name, file, NIL);
template_compile_string(item->params, file, T);
fprintf(file, "};\n\n");
}
static void
template_compile_data(struct template *template, FILE *file)
{
struct template_item *item = template->head;
while (item) {
switch (item->type) {
case TEMPLATE_ITEM_LINES:
template_compile_lines((struct template_lines *)item, file);
break;
case TEMPLATE_ITEM_IFDEF:
template_compile_ifdef((struct template_ifdef *)item, file);
break;
case TEMPLATE_ITEM_IFEQ:
template_compile_ifeq((struct template_ifeq *)item, file);
break;
case TEMPLATE_ITEM_FOREACH:
template_compile_foreach((struct template_foreach *)item,
file);
break;
case TEMPLATE_ITEM_LOOP:
template_compile_loop((struct template_loop *)item, file);
break;
case TEMPLATE_ITEM_CALL:
template_compile_call((struct template_call *)item, file);
break;
}
item = item->list_next;
}
}
static void
template_compile_decls(struct template *template, FILE *file)
{
struct template_item *item = template->head;
while (item) {
fprintf(file, "static struct");
switch (item->type) {
case TEMPLATE_ITEM_LINES:
fprintf(file, " template_lines ");
break;
case TEMPLATE_ITEM_IFDEF:
fprintf(file, " template_ifdef ");
break;
case TEMPLATE_ITEM_IFEQ:
fprintf(file, " template_ifeq ");
break;
case TEMPLATE_ITEM_FOREACH:
fprintf(file, " template_foreach ");
break;
case TEMPLATE_ITEM_LOOP:
fprintf(file, " template_loop ");
break;
case TEMPLATE_ITEM_CALL:
fprintf(file, " template_call ");
break;
}
fprintf(file, "_t%lu;\n", item->number);
item = item->list_next;
}
fprintf(file, "\n");
}
static void
template_compile_interface(char *prefix, struct template *template, FILE *file)
{
fprintf(file, "struct template _template_%s_%s = {\n",
prefix, template->name);
template_compile_string(template->name, file, NIL);
template_compile_block(template->head, file, NIL);
template_compile_block(template->tail, file, NIL);
fprintf(file, " %lu,\n", template->count);
template_compile_block(template->tree, file, NIL);
fprintf(file, " NIL\n");
fprintf(file, "};\n\n");
}
BOOL
template_compile(char *prefix, struct template *template, FILE *file)
{
fprintf(file, "#include \"misc.h\"\n");
fprintf(file, "#include \"template_structs.h\"\n\n");
template_compile_decls(template, file);
template_compile_data(template, file);
template_compile_interface(prefix, template, file);
return(T);
}
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